const mongoose = require('mongoose')

mongoose.connect('mongodb://localhost:27017/wx_dewu', {
  useNewUrlParser: true,
  useUnifiedTopology: true
})

const db = mongoose.connection
db.once('open', () => {
  console.log('数据库连接成功！')
})
db.on('err', () => {
  console.log('数据库连接失败  -_-')
})
